申論題

4.The results of a hypothetical study to measure test performance of the PCR (polymerase chain reaction) test for Covid-19 are shown in the following table.

Calculate the (A) accuracy, (B) precision (positive predictive rate, PPV), (C) recall (sensitivity, true positive rate, TPR), (D) true negative rate (TNR) and (E) F1-measure. Note: Show the result by rounding up the 3rd digit after the decimal point, e.g. 0.9876 should be 0.988.